{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:GTIJKNPLO3WG6KANWCC7MPCOOY","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1c0ac6c03e218e6674ce45afdfab56df3bb3ee52888ca5a2a87b565ac102f048","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-11T20:00:00Z","title_canon_sha256":"edf3c0402a818fc1dbc004927754c10124a46d446824b5f5bf15bad506c189e7"},"schema_version":"1.0","source":{"id":"1707.03449","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.03449","created_at":"2026-05-18T00:36:28Z"},{"alias_kind":"arxiv_version","alias_value":"1707.03449v1","created_at":"2026-05-18T00:36:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.03449","created_at":"2026-05-18T00:36:28Z"},{"alias_kind":"pith_short_12","alias_value":"GTIJKNPLO3WG","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_16","alias_value":"GTIJKNPLO3WG6KAN","created_at":"2026-05-18T12:31:18Z"},{"alias_kind":"pith_short_8","alias_value":"GTIJKNPL","created_at":"2026-05-18T12:31:18Z"}],"graph_snapshots":[{"event_id":"sha256:9c5714c073a4724843ab268078f85b658400fc27ebe20630a03badc87c387d9d","target":"graph","created_at":"2026-05-18T00:36:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The environment around protoplanetary disks (PPDs) regulates processes which drive the chemical and structural evolution of circumstellar material. We perform a detailed empirical survey of warm molecular hydrogen (H$_2$) absorption observed against H I-Ly$\\alpha$ (Ly$\\alpha$: $\\lambda$ 1215.67 {\\AA}) emission profiles for 22 PPDs, using archival Hubble Space Telescope (HST) ultraviolet (UV) spectra from the Cosmic Origins Spectrograph (COS) and the Space Telescope Imaging Spectrograph (STIS) to identify H$_2$ absorption signatures and quantify the column densities of H$_2$ ground states in ea","authors_text":"Keri Hoadley, Kevin France, Nicholas Kruczek, Nicole Arulanantham, R.O. Parke Loyd","cross_cats":["astro-ph.EP","astro-ph.GA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-11T20:00:00Z","title":"Signatures of Hot Molecular Hydrogen Absorption from Protoplanetary Disks: I. Non-thermal Populations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.03449","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:a8329660257b652d5f6c0705ffbbdaea7fefb84d468c0c3d3ec9c3e23946487e","target":"record","created_at":"2026-05-18T00:36:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1c0ac6c03e218e6674ce45afdfab56df3bb3ee52888ca5a2a87b565ac102f048","cross_cats_sorted":["astro-ph.EP","astro-ph.GA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.SR","submitted_at":"2017-07-11T20:00:00Z","title_canon_sha256":"edf3c0402a818fc1dbc004927754c10124a46d446824b5f5bf15bad506c189e7"},"schema_version":"1.0","source":{"id":"1707.03449","kind":"arxiv","version":1}},"canonical_sha256":"34d09535eb76ec6f280db085f63c4e763b26907316ba0e8bd3b9b232c8948965","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"34d09535eb76ec6f280db085f63c4e763b26907316ba0e8bd3b9b232c8948965","first_computed_at":"2026-05-18T00:36:28.671776Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:36:28.671776Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"s4UEEThUokUxhO0sfPSrolbY9QbAVJ4oXfdCjkZVQ4+cRy5QhD48IU2cfCT2z/4hMUJJqNk7A6v75AE9fQMzDg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:36:28.672464Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.03449","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a8329660257b652d5f6c0705ffbbdaea7fefb84d468c0c3d3ec9c3e23946487e","sha256:9c5714c073a4724843ab268078f85b658400fc27ebe20630a03badc87c387d9d"],"state_sha256":"128f31a420d7f4a21c6522436a6127e27bb7f02dafddc1f403b6325447daa6e5"}